1 files changed, 52 insertions, 0 deletions
diff --git a/third_party/rust/ron/tests/comments.rs b/third_party/rust/ron/tests/comments.rs
new file mode 100644
index 0000000000..2b77de6187
--- /dev/null
+++ b/third_party/rust/ron/tests/comments.rs
@@ -0,0 +1,52 @@
+use ron::de::{from_str, Error, Position, SpannedError as RonErr};
+
+#[test]
+fn test_simple() {
+    assert_eq!(
+        from_str(
+            "/*
+ * We got a hexadecimal number here!
+ *
+ */0x507"
+        ),
+        Ok(0x507)
+    );
+}
+
+#[test]
+fn test_nested() {
+    assert_eq!(
+        from_str(
+            "/*
+        /* quite * some * nesting * going * on * /* here /* (yeah, maybe a bit too much) */ */ */
+    */
+    // The actual value comes.. /*
+    // very soon, these are just checks that */
+    // multi-line comments don't trigger in line comments /*
+\"THE VALUE\" /* This is the value /* :) */ */
+    "
+        ),
+        Ok("THE VALUE".to_owned())
+    );
+}
+
+#[test]
+fn test_unclosed() {
+    assert_eq!(
+        from_str::<String>(
+            "/*
+        /* quite * some * nesting * going * on * /* here /* (yeah, maybe a bit too much) */ */ */
+    */
+    // The actual value comes.. /*
+    // very soon, these are just checks that */
+    // multi-line comments don't trigger in line comments /*
+/* Unfortunately, this comment won't get closed :(
+\"THE VALUE (which is invalid)\"
+"
+        ),
+        Err(RonErr {
+            code: Error::UnclosedBlockComment,
+            position: Position { col: 1, line: 9 }
+        })
+    );
+}